31201112312 has 16 divisors (see below), whose sum is σ = 58505403600. Its totient is φ = 15599671360.

The previous prime is 31201112251. The next prime is 31201112351. The reversal of 31201112312 is 21321110213.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53612 + ... + 255492.

It is an arithmetic number, because the mean of its divisors is an integer number (3656587725).

Almost surely, 2^31201112312 is an apocalyptic number.

It is an amenable number.

31201112312 is a deficient number, since it is larger than the sum of its proper divisors (27304291288).

31201112312 is a wasteful number, since it uses less digits than its factorization.

31201112312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221206 (or 221202 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 31201112312 its reverse (21321110213), we get a palindrome (52522222525).

The spelling of 31201112312 in words is "thirty-one billion, two hundred one million, one hundred twelve thousand, three hundred twelve".